/*
 * Copyright 2010-2017 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.js.test.utils

import org.jetbrains.kotlin.js.backend.ast.*

class AmbiguousAstSourcePropagation : RecursiveJsVisitor() {
    private var lastSource: Any? = null

    override fun visitElement(node: JsNode) {
        val source = node.source
        if (source == null && node is JsExpression) {
            node.source = lastSource
        }

        val oldLastSource = lastSource
        lastSource = node.source
        super.visitElement(node)
        lastSource = oldLastSource
    }
}